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Design Options for Three- and Four-Storey Wood School Buildings in British Columbia

https://research.thinkwood.com/en/permalink/catalogue2373
Year of Publication
2019
Topic
Design and Systems
Material
CLT (Cross-Laminated Timber)
NLT (Nail-Laminated Timber)
DLT (Dowel Laminated Timber)
Glulam (Glue-Laminated Timber)
Other Materials
Application
Wood Building Systems
Author
Bevilacqua, Nick
Dickof, Carla
Wolfe, Ray
Gan, Wei-Jie
Embury-Williams, Lynn
Organization
Fast + Epp
Wood Works! BC
Thinkspace
Year of Publication
2019
Country of Publication
Canada
Format
Report
Material
CLT (Cross-Laminated Timber)
NLT (Nail-Laminated Timber)
DLT (Dowel Laminated Timber)
Glulam (Glue-Laminated Timber)
Other Materials
Application
Wood Building Systems
Topic
Design and Systems
Keywords
Construction
Education
School Buildings
Mass Timber
Multi-Storey
Building Code
Fire Protection
Language
English
Research Status
Complete
Summary
This study illustrates the range of possible wood construction approaches for school buildings that are up to four storeys in height. As land values continue to rise, particularly in higher-density urban environments, schools with smaller footprints will become increasingly more necessary to satisfy enrollment demands. There are currently a number of planned new school projects throughout British Columbia that anticipate requiring either three-or four-storey buildings, and it is forecasted that the demand for school buildings of this size will continue to rise. This study is closely related to the report Risk Analysis and Alternative Solution for Three- and Four-Storey Schools of Mass Timber and/or Wood-Frame Construction prepared by GHL Consultants, which explores the building code related considerations of wood construction for school buildings that are up to four storeys in height. Though wood construction offers a viable structural material option for these buildings, the British Columbia Building Code (BCBC 2018) currently limits schools comprised of wood construction to a maximum of two storeys, while also imposing limits on the overall floor area. As such, the reader is referred to the GHL report for further information regarding building code compliance (with a particular emphasis on fire protection) for wood school buildings.
Online Access
Free
Resource Link
Less detail

Transferability of 2021 International Building Code Tall Wood Building Provisions to the National Building Code of Canada

https://research.thinkwood.com/en/permalink/catalogue2806
Year of Publication
2021
Topic
Fire
Design and Systems
Seismic
Material
CLT (Cross-Laminated Timber)
Glulam (Glue-Laminated Timber)
NLT (Nail-Laminated Timber)
Other Materials
Application
Hybrid Building Systems
Wood Building Systems
Organization
GHL Consultants Ltd.
Fast + Epp
Year of Publication
2021
Country of Publication
Canada
Format
Report
Material
CLT (Cross-Laminated Timber)
Glulam (Glue-Laminated Timber)
NLT (Nail-Laminated Timber)
Other Materials
Application
Hybrid Building Systems
Wood Building Systems
Topic
Fire
Design and Systems
Seismic
Keywords
National Building Code of Canada
International Building Code
Building Code
Encapsulated Mass Timber Construction
Encapsulation
Exposed Mass Timber Elements
Building Height
Building Area
Fire Resistance Rating
Language
English
Research Status
Complete
Summary
The acceptable solutions in Division B of the anticipated 2020 NBCC limit the height of Groups C and D buildings of sprinklered encapsulated mass timber construction (EMTC) to 12 storeys in building height, and a measured building height of 42m. The recently published 2021 IBC contains provisions to permit buildings of mass timber construction under the IBC Type IV construction, surpassing the NBCC provisions by maximum building height, building area, occupancy groups, and interior exposed timber. The IBC mass timber buildings are permitted to have a building height of maximum 18 storeys, depending on the occupancy group. Within Type IV construction, four subdivisions are described to have varying maximum permissible building height, area, fire resistance rating (FRR), and interior exposed timber. Through a comparison of mass timber provisions of both Codes, relevant research reports, test reports, industry standards, this report documents the consequential and inconsequential differences and developed conclusions on whether the NBCC can adopt the IBC provisions, and with what modifications so that the new provisions may fit the NBCC context.
Online Access
Free
Resource Link
Less detail